I quit throwing rhynos because I loved the old se and pro line and they became too expensive to throw so I moved on to other discs. The 3 GStars I have are the closest thing I've had (other than some specific gum champs) to my old beloved pro lines. With these GStars only being $15 I am back to throwing them. I just love the way the thumbtrac feels.
You should check out the Pro's they have at the factory store. They aren't as soft as SE or Pro Line but they really are great discs. I swapped mine out of my bag to break in my Gstar for the time being.